AV 220h Drainage System

Similar to the AV 200h Drainage System but with an additional pressure-dividing slip film glued to the back of the dimpled sheet that acts as the first smooth, non-sticky surface of the slip layer and as an additional protection layer of the waterproofing membrane. Application The AV 220h Drainage System is a component of the Nophadrain Podium Deck System that acts as a filter, drainage and protection layer. The drainage system is designed for roofs with limited falls. The increased construction height (approx. 16 mm) prevents waterlogging in the sub-base and /or levelling layer and the risk of frost heave affecting the paving and allows longer drainage length. Properties • Material dimpled sheet: recycled high impact polystyrene (HIPS) • Material geotextile filter: polypropylene (PP) and polyethylene (PE) • Material pressure-dividing slip film: polypropylene (PP) – AV 220h only • Construction height: approx. 16 mm • Compressive strength: approx. 450 kPa • Weight: approx. 956 g/m² (AV 220h) 450 kPa • Drainage capacity at i = 1 at 20 kPa: approx. 7.38 l/(s.m) • Drainage capacity at fall ratio 2 % at 20 kPa: approx. 1.04 l/(s.m)